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There are two possible types, one being where it bends back then straightens again to take the same angle, and two ebing where it just bends. I am suspecting the former would work better.

The problem i am having is that i just bought a large Ellsworth Joker frame which is the right heigt for me, but a little too long feeling. I am going to get a very short dh stem but was wondering if i could also fix the problem with a setback post.

The only people that do that is triatheletes. They flip setback posts around so that they can save their running muscles.
For any other type of riding, it will mess up your pedal stroke. Also, it puts so much weight on the front wheel that it is dangerous for anything other than time trials.

ssshock4, I'm also looking to get a setback seatpost.
You might want to check out the reviews of that model Thompson seatpost from roadbikereview.comhttp://www.roadbikereview.com/Seatpo...7_2510crx.aspx
From what the reviewers are saying, you can angle the post forward or aft, but get mixed results (depending on who you ask) either way.

Here's another seat post that with adjustable fwd/aft positioninghttp://www.roadbikereview.com/Seatpo...8_2510crx.aspx
The critics hate it, but you might find it suited for your situation.
It's too short for me (255mm), so I'm still looking for a post with fwd/aft adjustment and a longer (like 300mm?) stem.

Did you just ask if you can put your stem backwards? God, how much too long is that frame! While you physically could do it, it would take *some* getting used to. If you look at pictures of really old bikes and hobyyhorses, alot of them were setup like that. But it seems like there are many reasons to not do it. One issue would be front traction. When you stand you wouldn't be able to get as much weight over it. Think more front wheel washouts. I can't help but think it would affect the rake of the wheel. Or maybe that just has to do with the headtube and fork shape. Backwards stem... crazy talk. Try it!

I turned my seat post around Saturday because I just couldn't quite get my saddle far enough forward. It has just enough adjustment to get the saddle level and it feels great! The bike is a 56 cm most measurement systems recomended a 54 but the LBS suggested a 56. I noticed that I was having trouble with my achelies tendon hurting. I lowered the saddel and moved it as far forward as possible. I also realigned my shoe cleats. The saddle has very short rails and doesn't afford a lot of adjustments.

Did the larger frame cause the slight missalignment of saddle? Should I have gone with a 54 and used an even longer stem, I'm using 120 mm now,? Should I replace the post with one with no sit back? It also feels much better on my hands now and my knees are in a better position.

Originally posted by Davet One reason that you can't reverse a setback seatpost is that there will not be enough tilt adjustment to bring the seat back to level. The nose will be too high when you run out of adjustment.

This was my first thought also. Mabey find one longer bolt?

Make sure the adusting bolts (as found on the Thompson) have a good amount of thread in the cylinder nuts. Wouldn't want it to break apart under load.